US3583351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vessel for transporting liquefied hydrocarbon
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1968-10-28
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Granted: 1971-06-08
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Expires: 1988-10-28
Abstract
Abstract A ship for transporting liquids at very low temperatures at about atmospheric pressure, comprising an inner and outer ordinary shipbuilding steel hull and single walled, selfsupporting, low temperature material tanks covered with an insulation system which serves to prevent cold from reaching the ordinary shipbuilding steel. The inner walls of the inner steel hull are also insulated as further protection against any leaks which might develop in the primary tanks. The tanks are supported on insulation-bearing blocks and restrained by vertical keys located at the center of the tank sides and ends.
Inventors
- 👤 Paul T Gorman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:54
CPC Classifications
F; F17; F17C; F17C3/00; F17C3/02; F17C3/025; B; B63; B63B; B63B25/00; B63B25/02; B63B25/08; B63B25/12; B63B25/16; F17C2201/00; F17C2201/01; F17C2201/0147; F17C2201/0157; F17C2203/00; F17C2203/03; F17C2203/0304; F17C2203/0329; F17C2203/0333; F17C2203/0337; F17C2203/0345; F17C2203/035; F17C2203/06; F17C2203/0602; F17C2203/0607; F17C2203/0612; F17C2203/0626; F17C2203/0629; F17C2203/0631; F17C2203/0634; F17C2203/0636; F17C2203/0639; F17C2203/0646; F17C2203/0648; F17C2205/00; F17C2205/01; F17C2205/0103; F17C2205/0119; F17C2205/0153; F17C2205/018; F17C2205/0192; F17C2209/00; F17C2209/22; F17C2209/221; F17C2209/227; F17C2209/228; F17C2209/23; F17C2209/232; F17C2221/00; F17C2221/03; F17C2221/032; F17C2221/033; F17C2223/00; F17C2223/01; F17C2223/0146; F17C2223/0153; F17C2223/0161; F17C2223/03; F17C2223/033; F17C2260/00; F17C2260/01; F17C2260/011; F17C2260/013; F17C2260/015; F17C2260/03; F17C2260/031; F17C2260/033; F17C2270/00; F17C2270/01; F17C2270/0102; F17C2270/0105; F17C2270/0134; Y; Y10; Y10S; Y10S220/00; Y10S220/901; Y10S220/902
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
104 words
In a tanker for carrying liquefied gases maintained at atmospheric pressure and cryogenic temperatures, said tanker having an inner hull and an outer hull and a cargo hold partially defined by said inner hull, the improved system which comprises: a. a self-supporting cargo tank supported within said cargo hold; b. a first multilayer insulation system positioned on the exterior of said cargo tank; and c. a secondary barrier independent of said first multilayer insulation system and comprising a plurality of individual insulation panels affixed on the interior walls of said inner hull and disposed in spaced relation relative to said first multilayer insulation system.
Claim 2
Dependent Claim
104 words
In a tanker for carrying liquefied gases maintained at atmospheric pressure and cryogenic temperatures, said tanker having an inner hull and an outer hull and a cargo hold partially defined by said inner hull, the improved system which comprises: a. a self-supporting cargo tank supported within said cargo hold; b. a first multilayer insulation system positioned on the exterior of said cargo tank; and c. a secondary barrier independent of said first multilayer insulation system and comprising a plurality of individual insulation panels affixed on the interior walls of said inner hull and disposed in spaced relation relative to said first multilayer insulation system.
Claim 3
Dependent Claim
64 words
The system of claim 1 wherein said multilayer insulation system comprises, a first course of insulation panels, an intermediate thermally nonconductive support wall affixed to the exterior walls of said cargo tank for holding said first course of panels against the exterior of said cargo tank, and a second insulation course comprising a plurality of individual insulating panels affixed to said intermediate support wall.
Claim 4
Dependent Claim
45 words
The system of claim 2 wherein said intermediate support wall comprises a plurality of panels which are affixed to said exterior walls of said cargo tank in a manner which allows slippage between said intermediate support wall panels and said first course of insulation panels.
Claim 5
Dependent Claim
25 words
The system of claim 1 wherein the individual panels comprising said secondary barrier comprise fiberglass reinforced plastic shells filled with a foamed plastic insulation material.
Claim 6
Dependent Claim
129 words
An improved insulation system for a cryogenic cargo tanker having an inner and outer hull of the type wherein a primary self-supporting cargo tank is positioned within said inner hull, said system comprising, a multilayer insulation panel system affixed to the exterior of said self-supporting cargo tank, and a secondary barrier independent of said multilayer insulation panel system comprising a pluralIty of insulation panels arrayed in end-to-end and side-by-side configuration on the interior of said inner hull so as to define a liquid and vaportight barrier and being disposed in spaced relation relative to said multilayer insulation panel system, said secondary barrier being normally protected from the extremes of cryogenic temperatures by the insulating effect of said multilayer insulation panel system affixed to the exterior of said cargo tanks.
Claim 7
Dependent Claim
129 words
An improved insulation system for a cryogenic cargo tanker having an inner and outer hull of the type wherein a primary self-supporting cargo tank is positioned within said inner hull, said system comprising, a multilayer insulation panel system affixed to the exterior of said self-supporting cargo tank, and a secondary barrier independent of said multilayer insulation panel system comprising a pluralIty of insulation panels arrayed in end-to-end and side-by-side configuration on the interior of said inner hull so as to define a liquid and vaportight barrier and being disposed in spaced relation relative to said multilayer insulation panel system, said secondary barrier being normally protected from the extremes of cryogenic temperatures by the insulating effect of said multilayer insulation panel system affixed to the exterior of said cargo tanks.
Claim 8
Dependent Claim
73 words
The system of claim 5 wherein said multilayer insulation panel system comprises a first course of insulation panels, and an intermediate thermally nonconductive support wall comprising a plurality of individual panels, which wall is fastened to said cargo tank so as to hold said first course of insulation panels against the exterior of said cargo tank whereby slippage is allowed between said intermediate support wall panels and said first course of insulation panels
Claim 9
Dependent Claim
101 words
A tanker for carrying cryogenic cargoes which comprises, an outer hull, a hold defining inner hull positioned within said outer hull, a liquefied gas self-supporting cargo tank positioned within said hold, first insulating means disposed on the exterior walls of said self-supporting cargo tank, and second insulating means independent of said first insulating means disposed on the interior walls of said hold and disposed in spaced relation relative to said first insulating means, said second insulating means serving as a secondary barrier and being normally protected from the extremes of cryogenic temperatures by the insulating effect of said first insulating means.
Claim 10
Dependent Claim
101 words
A tanker for carrying cryogenic cargoes which comprises, an outer hull, a hold defining inner hull positioned within said outer hull, a liquefied gas self-supporting cargo tank positioned within said hold, first insulating means disposed on the exterior walls of said self-supporting cargo tank, and second insulating means independent of said first insulating means disposed on the interior walls of said hold and disposed in spaced relation relative to said first insulating means, said second insulating means serving as a secondary barrier and being normally protected from the extremes of cryogenic temperatures by the insulating effect of said first insulating means.
Claim 11
Dependent Claim
49 words
A tanker according to claim 7 including means for securing said first insulating means to the exterior walls of said self-supporting cargo tank such that such first insulating means is allowed to contract independent of said self-supporting cargo tank, thereby to minimize thermal stresses in said first insulating means.
Claim 12
Dependent Claim
54 words
A tanker according to claim 7 wherein said second insulating means comprises a plurality of panels, and including means for joining said panels so as to form a liquid and vapor barrier whereby in the event of a failure in said Self-supporting tank, said second insulating means serves as a container for the cargo.
Claim 13
Dependent Claim
45 words
A tanker according to claim 7 wherein the outermost surface of said first insulating means and the innermost surface of said second insulating means are disposed on said exterior walls and said interior walls, respectively, in spaced relation thereby to define an access space therebetween.
Claim 14
Dependent Claim
133 words
A tanker for carrying cryogenic cargoes comprising at least one hull which effectively defines a cargo hold, a self-supporting cargo tank positioned within said cargo hold, first insulating means disposed on the exterior walls of said self-supporting cargo tank, and second insulating means separate from said first insulating means disposed on the interior walls of said hold in spaced relation relative to said first insulating means so as to define an access space between said first insulating means and said second insulating means, said second insulating means serving as a secondary barrier and normally being protected from the extremes of cryogenic temperatures by the insulating effect of said first insulating means, whereby said second insulating means serves as a container for the cargo in the event of failure of said self-supporting cargo tank.
Claim 15
Dependent Claim
133 words
A tanker for carrying cryogenic cargoes comprising at least one hull which effectively defines a cargo hold, a self-supporting cargo tank positioned within said cargo hold, first insulating means disposed on the exterior walls of said self-supporting cargo tank, and second insulating means separate from said first insulating means disposed on the interior walls of said hold in spaced relation relative to said first insulating means so as to define an access space between said first insulating means and said second insulating means, said second insulating means serving as a secondary barrier and normally being protected from the extremes of cryogenic temperatures by the insulating effect of said first insulating means, whereby said second insulating means serves as a container for the cargo in the event of failure of said self-supporting cargo tank.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |